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U-BOLT NUT TORQUE
Axle type
U-bolt torque
Ft. lb. N•m
All 260–300 353–407
Spring U-bolt checks
Check U-bolt nuts and re-torque every 30,000 miles (48,000 km) after
initial 1,000 miles (1,600 km) re-torque. The U-bolt and nut threads and
seats should be cleaned and lubricated to ensure peak condition when
re-torqued.
FRAME AND TOW HOOKS
Your vehicles chassis is manufactured with frame rails of either mild
carbon steel, or HSLA steel. Each must be handled in a specific manner
to ensure maximum service life. Before attempting frame repair or
modification, consult the service manual or your dealer.
It is important, particularly on vehicles where the tow hooks are used
frequently to inspect the front and rear tow hooks for damage or a loose
mounting.
DRIVESHAFT SHAFT
At the regular lubrication interval, check the universal joints for any
evidence of wear or looseness. Should driveshaft vibrations occur, stop
the vehicle immediately to avoid possible hazardous consequences or
damage to other components.
REAR AXLE LUBRICANT
Refer to the scheduled maintenance information for rear axle
lubricant level checks and lubricant change intervals.
The rear axle may be filled with an optional synthetic lubricant which
allows the use of extended service intervals. A tag on the filler plug will
identify the use of synthetic lubricant.
Use only a lubricant that meets manufacturer specifications (refer to
Lubricant specifications in this chapter).
Use of a non-approved rear axle lubricant may cause internal axle
component damage.
Check your rear axle lubricant level using the following procedure:
1. Park the vehicle on level ground.
2009 Low Cab Forward Truck (lcf)
Supplement
USA (fus)
Maintenance and Specifications
163
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